Downhaul for mines.



No. 699,022. Pa tented Apr. 29, I902 C. L. E. SCHENK.

DOWNHAUL' FUR MINES.

(Application filed Feb. 10, 1902.)

(No Model.)

INVENT R IngQoim: PEYERS coy, mow-urns" wnsulncfou, n. c.

UNIT D STATES PATE T GE ICE.

oARL L. E. SOHENK, O WALKERs'MILLS, PENNSYLVANIA, AssrGNoR OF ONE-HALFTO TATE, JoNEs & OOMPANY,-INORPORATED, OF PITTS- BURG, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

DOWNHAUL FOR MINES.-

.SPECIFICATION forming part of Letters Patent N0. 699,022, dated April29, 1902.

7 Application filed February 10, 1902. S rial No. 93,437. (No model.)

To aZZ whom it may concern.-

Be it known that I, CARL L. E. SOHENK, a citizen of the United States,residing at Walkers Mills, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain newand usefulImprovements in Downhauls for Mines, of which improvements the followingis a specification.

The invention described herein relates to certain improvements indownhauls for cars, and has for its object certain improvements inmechanism for connecting each car to the downhaul-chain and in means forefiecting the automatic engagement of such mechantrack into the mine;

ism with the cars.

The invention is hereinafter described and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is an elevation of the unloading and car-return tracks for acoal-mine. Fig. 2 is a plan View of the same. Fig. 3 is a side elevationof a portion of the doWnhaul-chain with the car-connecting mechanism,and Fig. 4; is a plan view of the same.

In the practice of my invention the loaded cars are drawn up from themine onto the track 1. As the cars reach to point a, the load isdischarged and the car allowed to run free down the inclined track 1onto the kick-off track 2, whichis oppositely inclined, so that the carwill run back and onto the storagetrack 3, which forms a portion of thedown- The cars are stopped on this portion of the track preparatory totheir being connected to the downhaul-chain.

The stoppage of the cars is effected by a track-brake of the usual orany suitable construction-such, for example, as that shown in Fig. 2,consisting of pieces of timber 4, resting on the cross-ties andyieldingly held against the inner sides of the rails by spring 6, sothat when the cars run onto this portion of the track the flanges of thewheels will be gripped between the rails and the pieces of timber." I

The downhaul-chain 7 is provided at suitable intervals with two dogs orfingers 8 and 9, pivotally connected to the chains, so as to swing inopposite directions. These dogs 8 and 9 are provided with weightedportions 10 and 11 at one side of their pivotal point, adapted to holdthe dogs or pins in operative position with relationto a rib orflange-like projection 12 from the bottom of the cars. The dogs areprovided with fingers 13 and 14, respectivel y, said fingers overlappingeach other, as shown in Fig. 3. By reason of this construction when acar passes over the chain in the direction of movement of the latter itwill strike the pin 8, turning it down to the position shown in dottedlines in Fig. 3, and through themedium of the fingers 13 and 14 the dog9 will also be turned down to a similar position, so that theflange-plate or projection on the car will pass over the dogs withoutengaging them. If, however, the car is stationary while the chain movesin the direction of the arrow in Fig. 3, or the chain moves faster thanthe car, the dog 9 will strike the flange-plate or projection and bestorage track will be greater than that of the chain and that dogs ofthe chain will engage only the last car of such series of cars standingbumper to bumper on the storage-track, as shown in Fig. 1. In order toprovide for the engagement of the chain with each of the preceding cars,a portion 3 of the track adjacent to the storage-track is given adownward slope or inclination, so that when the car I), which is notconnected with the chain nor with adjacent car 0, reaches the pitch ofsuch incline it will run ahead of the preced ing dogs of the chain andwill pass up onto the upwardly-inclined portion 3 of the track, which,is preferably provided with trackbrakes, so as to stop or check the caron such. upwardly-inclined portion. During its accelerated movement theflange-plate of the car I) will pass beyond the grip b and by thestoppage or checking of the car the grip b of the chain will overtakethe car and pass along under the projecting plate or flange. The dog 9will be depressed in the manner stated, so that the flange-plate orprojection can be engaged by both dogs. As soon as the car 0 reaches theinclined portion 3 it Will also run ahead of the connecting mechanism onthe chain, be stopped on the inclined portion 3, so that this connectingmechanism can overtake and be caused to oporatively engage theflange-plate or projection on the car.

It is characteristic of the improvements described herein that in orderto effect an engagement between the chain and the car the chain mustmove ahead faster than the car.

I claim herein as my invention- 1. A downhaul for cars, having incombination, a chain having oppositely-swinging dogs, acar provided witha flange-plate or projection and track portions having oppositeinclinations whereby the car is caused to move faster than the chain andthen checked, substantially as set forth.

2. A downhaul for cars, having in combination, a chainhavingoppositely-swinging dogs, a car provided with a flange-plate orproj ection,a track havinga downwardly-inclined portion adapted toimpart to the car a speed greater than that of the chain and means forreducing the speed of the car below that of the chain, substantially asset forth.

3. A downhaul for cars, having in combination, a chain,oppositely-swinging dogs mounted on the chain, said dogs being providedwith overlapping fingers, substantially as set forth.

In testimony whereof I have hereunto set \Vitnesses:

DARWIN S. WoLooTT, F. E. GAITHER.

